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Compact black controller box with two heater ports and a 12V output socket

Celestron

Celestron Smart DewHeater Controller 2X video accessory

SKU CH-TT8C-TREJT

Optimises power for up to two dew heaters using real-time sensor data and includes a 12V DC output port

  • Real-time sensor data optimises heat output to prevent dew formation
  • Two independent heater ports warm separate optics or accessories simultaneously
  • Extra 12V DC output powers a mount or other device from the same controller
  • Microprocessor continuously monitors ambient temperature and humidity for automatic adjustment
  • Compatible with Celestron Dew Heater Rings and third-party bands when paired with the thermistor accessory

Smart DewHeater Controller 2X

The Celestron Smart DewHeater Controller 2X manages up to two dew heaters for astronomical optics. It uses real-time sensor data to apply only the heat needed to prevent dew formation. This approach extends battery life during imaging sessions. The unit suits astrophotographers and visual observers who want automated dew control.

Dual ports and 12V output

Two independent heater ports allow simultaneous control of a main telescope and a guide scope, eyepiece or second optical tube. An additional 12V DC output can power a mount or other accessory from the same supply. The controller works with Celestron Dew Heater Rings that include built-in thermistors. Third-party straps require the separate Celestron Thermistor for Smart DewHeater Controllers.

Microprocessor-driven regulation

A built-in microprocessor continuously monitors ambient temperature and humidity, then computes the precise power level for each connected heater. This closed-loop regulation prevents overheating and conserves energy compared to constant-on heaters. Buyers who need more than two heater zones or who lack a 12V power source will need a different solution.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $201.99
Pricier than about 87% of the 3,838 comparable items (median $41.99).

Specifications

No published specifications for this item yet.

Questions about this item

Will the 12V DC output port power my existing equatorial mount without a separate supply?

Yes, the additional 12V DC output port is designed to run another 12V device such as your mount directly from the controller.

How can I confirm the microprocessor is adjusting heat correctly after I connect everything?

The controller monitors ambient temperature and humidity in real time and automatically adjusts the dew heaters, so steady, dew-free optics indicate it is working as intended.

Does the package include the thermistor needed for my third-party heater bands, or must I buy it separately?

The thermistor for Smart DewHeater Controllers is sold separately; the box provides the controller with two heater ports and the extra 12V DC output only.

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